Modeling and Performance Analysis of Free Space Quantum Key Distribution

Lopes, Minal; Sarwade, Nisha

doi:10.1007/978-81-322-2757-1_4

Cited by 2 publications

(3 citation statements)

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“…Unfortunately, they did not measure the impacts of key rate generations. Due to the complications to define the exact atmospheric losses, several QKD experiments did not include detailed parameters while conducting those experiments [20]. They simply defined the overall atmospheric attenuation in decibel without presenting the calculations of geometrical losses.…”

Section: Related Workmentioning

confidence: 99%

“…Therefore, the final secret key length relies on Eve's information about the raw keys. Secret key rates (SKRs) and quantum bit error rates (QBERs), to be referred to in [11,13,20], are used to evaluate QKD's output over FSO's. SKR can be defined as the probability of obtaining a bit of secret key per transmitted quantum signal pulse [4], while QBER is determined by the probability ratio of error bits and the overall probability of Bob detection.…”

Section: Formulation Of Fso Multiphoton Quantum Cryptographymentioning

confidence: 99%

“…the p d is the photon false count due to the deficiency device at the receiver [20], with the value of 10 −5 [6]. QBER is determined by the probability ratio of the bits in error and the total probability of Bob's detection.…”

Section: The Implementation Of Mqc-mbmentioning

confidence: 99%

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MQC-MB: Multiphoton Quantum Communication Using Multiple-Beam Concept in Free Space Optical Channel

et al. 2020

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Multiphoton Quantum Key Distribution (QKD) has recently been proposed to exchange the secret keys using the rotational of polarization over a multi-stage protocol. It has the ability to outperform the weaknesses of a single photon QKD by improving the generation of key rate and distance range. This paper investigates the theoretical aspects of multiphoton QKD protocol’s performance over free space optic (FSO) networks. The most common setup for quantum communication is the single-beam approach. However, the single-beam setup has limitations in terms of high geometrical loss. In this paper, the symmetry multiple-beam for quantum communication which is called as Multiphoton Quantum Communication-Multiple Beam (MQC-MB) is proposed to transmit the multiphoton from the sender to the receiver in order to minimize the impact of geometrical loss that is faced by the single-beam setup. The analysis was carried out through mathematical analysis by establishing the FSO quantum model with the effects of atmospheric and geometrical loss as well as considering atmospheric turbulence modeled by log-normal distribution. The design criteria of FSO, such as the transmitter, receiver, beam divergence, and diameter of apertures, are analytically investigated. The numerical results demonstrate that the MQC-MB outperforms the single-beam in terms of reducing channel loss by about 8 dB and works well under strong turbulence channel. Furthermore, the MQC-MB reduces the quantum bit error rate (QBER) and improves the secret key rate (SKR) as compared to the single-beam system even though the distance between the sender and receiver increases.

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Section: Related Workmentioning

confidence: 99%